A comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless steel and CrN/AlN material
Corrosive-erosive effect on AISI D3 steel, 304 stainless steel and CrN/AlN coating in aqueous NaCl slurries was studied. CrN/AlN multilayer films with a thickness of 3 µm and bilayer period of Λ = 60 nm (50 bilayers) were obtained by using the physical vapor deposition (PVD) technique (magnetron spu...
- Autores:
-
Caicedo Angulo, Julio Cesar
Cabrera Cifuentes, Gerardo
Caicedo, H. H.
Aperador, William
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2012
- Institución:
- Universidad Autónoma de Occidente
- Repositorio:
- RED: Repositorio Educativo Digital UAO
- Idioma:
- eng
- OAI Identifier:
- oai:red.uao.edu.co:10614/12165
- Acceso en línea:
- http://red.uao.edu.co//handle/10614/12165
- Palabra clave:
- Materiales - Propiedades mecánicas
Material - Mechanical properties
Corrosion-erosion
Multilayer coating
Electrochemical tests
Surface analysis
- Rights
- openAccess
- License
- Derechos Reservados - Universidad de Barcelona, 2012
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dc.title.eng.fl_str_mv |
A comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless steel and CrN/AlN material |
title |
A comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless steel and CrN/AlN material |
spellingShingle |
A comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless steel and CrN/AlN material Materiales - Propiedades mecánicas Material - Mechanical properties Corrosion-erosion Multilayer coating Electrochemical tests Surface analysis |
title_short |
A comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless steel and CrN/AlN material |
title_full |
A comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless steel and CrN/AlN material |
title_fullStr |
A comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless steel and CrN/AlN material |
title_full_unstemmed |
A comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless steel and CrN/AlN material |
title_sort |
A comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless steel and CrN/AlN material |
dc.creator.fl_str_mv |
Caicedo Angulo, Julio Cesar Cabrera Cifuentes, Gerardo Caicedo, H. H. Aperador, William |
dc.contributor.author.none.fl_str_mv |
Caicedo Angulo, Julio Cesar Cabrera Cifuentes, Gerardo Caicedo, H. H. Aperador, William |
dc.subject.armarc.spa.fl_str_mv |
Materiales - Propiedades mecánicas |
topic |
Materiales - Propiedades mecánicas Material - Mechanical properties Corrosion-erosion Multilayer coating Electrochemical tests Surface analysis |
dc.subject.armarc.eng.fl_str_mv |
Material - Mechanical properties |
dc.subject.proposal.eng.fl_str_mv |
Corrosion-erosion Multilayer coating Electrochemical tests Surface analysis |
description |
Corrosive-erosive effect on AISI D3 steel, 304 stainless steel and CrN/AlN coating in aqueous NaCl slurries was studied. CrN/AlN multilayer films with a thickness of 3 µm and bilayer period of Λ = 60 nm (50 bilayers) were obtained by using the physical vapor deposition (PVD) technique (magnetron sputtering). The corrosion-erosion experiments were performed in a test machine in which the impingement velocity, impact angle, concentration of solids and pH of the solution were controlled. Polarization curves were simultaneously obtained to correlate the electrochemical effects to the erosive wear mechanisms. The slurry used consists of silica particles suspended in a mixture of acid solution and 3.5% NaCl, with a pH value of 5.6. Electrochemical results showed the best corrosion resistance for 304 stainless steels. Additionally, the surface analysis by SEM micrograph revealed formation of cracks in CrN/AlN multilayers coating and plastic deformation in both steel substrates (AISI D3 steel, 304 stainless steel), especially when the mean impact angle is a critical value of 90°. Measurements of critical and passive current densities showed that the behavior of coated materials differed depending on the substrate that is used. Nonetheless, in a general way, by increasing the impact angle and by changing its incidence from normal to grazing, it led to a resistance to corrosion-erosion processes |
publishDate |
2012 |
dc.date.issued.none.fl_str_mv |
2012-02 |
dc.date.accessioned.none.fl_str_mv |
2020-03-25T18:03:09Z |
dc.date.available.none.fl_str_mv |
2020-03-25T18:03:09Z |
dc.type.spa.fl_str_mv |
Artículo de revista |
dc.type.coar.fl_str_mv |
http://purl.org/coar/resource_type/c_2df8fbb1 |
dc.type.coarversion.fl_str_mv |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
dc.type.coar.eng.fl_str_mv |
http://purl.org/coar/resource_type/c_6501 |
dc.type.content.eng.fl_str_mv |
Text |
dc.type.driver.eng.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.redcol.eng.fl_str_mv |
http://purl.org/redcol/resource_type/ARTREF |
dc.type.version.eng.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
http://purl.org/coar/resource_type/c_6501 |
status_str |
publishedVersion |
dc.identifier.issn.spa.fl_str_mv |
1874-088X |
dc.identifier.uri.none.fl_str_mv |
http://red.uao.edu.co//handle/10614/12165 |
dc.identifier.instname.spa.fl_str_mv |
Universidad Autónoma de Occidente |
dc.identifier.reponame.spa.fl_str_mv |
Repositorio Educativo Digital |
identifier_str_mv |
1874-088X Universidad Autónoma de Occidente Repositorio Educativo Digital |
url |
http://red.uao.edu.co//handle/10614/12165 |
dc.language.iso.eng.fl_str_mv |
eng |
language |
eng |
dc.relation.eng.fl_str_mv |
The Open Materials Science Journal. Volumen 6, (2012): páginas 14-21 |
dc.relation.citationendpage.none.fl_str_mv |
21 |
dc.relation.citationstartpage.none.fl_str_mv |
14 |
dc.relation.citationvolume.none.fl_str_mv |
6 |
dc.relation.cites.spa.fl_str_mv |
Caicedo Angulo, J. C., Cabrera Cifuentes, G., Caicedo, H. H., Aperador, W. A. (2012). comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless steel and CrN/AlN material. The Open Materials Science Journal. 6 (1), 14-21. http://red.uao.edu.co//handle/10614/12165 |
dc.relation.ispartofjournal.eng.fl_str_mv |
The Open Materials Science Journal |
dc.relation.references.none.fl_str_mv |
Annual Book of ASTM Standards 2002. Section 03, 03-02, G119-93, 2002 Lopez D, Congote JP, Cano JR, Toro A, Tschiptschin AP. Effect of particle velocity and impact angle on the corrosion-erosion of AISI 304 and AISI 420 stainless steels. Wear 2005; 259: 118-24. Burstein GT, Sasaki K. Effect of impact angle on the slurry erosion-corrosion of 304L stainless steel. Wear 2000; 240: 80-94. Aiming F, Jinming L, Ziyun T. An investigation of the corrosive wear of stainless steels in aqueous slurries. Wear 1996; 193: 73-7. Toro A, Sinatora A, Tanaka DK, Tschiptschin AP. Corrosion-erosion of nitrogen bearing martensitic stainless steels in seawater-quartz slurry. Wear 2001; 251: 1257-64 Neville A, Hodgkiess T, Dallas JT. A study of the erosion-corrosion behavior of engineering steel for marine pumping applications. Wear 1995; 187: 497-507 Cabrera G, Torres F, Caicedo JC, Aperador W, Amaya C, Prieto P. Improvement of Electrochemical Surface Properties in Steel Substrates Using a Nanostructured CrN/AlN Multilayer Coating. JMEPEG ASM International. DOI: 10.1007/s11665-010-9798-7 Caicedo JC, Yate L, Cabrera G, Aperador W, Zambrano G, Prieto P. Effect of negative bias voltage on mechanical and electrochemical nature in Ti-W-N coatings. J Mater Sci 2011; 46: 1244-52. Purandare YP, Stack MM, Hovsepian PEh. Velocity effects on erosion-corrosion of CrN/NbN “superlattice” PVD coatings. Surf Coat Technol 2006; 201: 361-70 Suresha SJ, Math S, Jayaram V, Biswas SK. Toughening through multilayering in TiN-AlTiN films. Philos Mag 2007; 87: 2521-39. Han Z, Tian J, Lai Q, Yu X, Li G. Effect of N2 Partial Pressure on the Microstructure and Mechanical Properties of Magnetron Sputtered CrNx Films. Surf Coat Technol 2003; 162: 189-93 Cabrera G, Caicedo JC, Amaya C, Yate L, Muñoz Saldaña J, Prieto P. Enhancement of mechanical and tribological properties in AISI D3 steel substrates by using a non-isostructural CrN/AlN multilayer coating. Mater Chem Phys 2011; 125: 576-86 Fenker M, Balzer M, Jehn HA, Kappl H, Lee J-J, Lee K-H, Park H-S. Improvement of the corrosion resistance of hard wear resistant coatings by intermediate plasma etching or multilayered structure. Surf Coat Technol 2002; 150: 101-6 Jehn HA. Structural defects and the electrochemical properties of nitride coatings. Surf Coat Technol 2000; 125: 212-7 William Grips VK, Harish Barshilia C, Ezhil Selvi V , Kalavati, Rajam KS. Electrochemical behavior of single layer CrN, TiN, TiAlN coatings and nanolayered TiAlN/CrN multilayer coatings prepared by reactive direct current magnetron sputtering. Thin Solid Films 2006; 514: 204-11. Afrasiabi A, Saremi M, Kobayashi A. A comparative study on hot corrosion resistance of three types of thermal barrier coatings: YSZ, YSZ + Al2O3 and YSZ/Al2O3. Sci Eng A 2008; 478: 264-9 |
dc.rights.spa.fl_str_mv |
Derechos Reservados - Universidad de Barcelona, 2012 |
dc.rights.coar.fl_str_mv |
http://purl.org/coar/access_right/c_abf2 |
dc.rights.uri.eng.fl_str_mv |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |
dc.rights.accessrights.eng.fl_str_mv |
info:eu-repo/semantics/openAccess |
dc.rights.creativecommons.spa.fl_str_mv |
Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0) |
rights_invalid_str_mv |
Derechos Reservados - Universidad de Barcelona, 2012 https://creativecommons.org/licenses/by-nc-nd/4.0/ Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0) http://purl.org/coar/access_right/c_abf2 |
eu_rights_str_mv |
openAccess |
dc.format.eng.fl_str_mv |
application/pdf |
dc.format.extent.spa.fl_str_mv |
8 páginas |
dc.publisher.spa.fl_str_mv |
Bentham Science |
institution |
Universidad Autónoma de Occidente |
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Caicedo Angulo, Julio Cesar588c46af99ce16873a825719b0613777Cabrera Cifuentes, Gerardoc9235f9d536564685c5affa20f3c4dbeCaicedo, H. H.25612ff0788607c163bfa3df71549845Aperador, William22f23595993c3e95414c1bb06d41b3b12020-03-25T18:03:09Z2020-03-25T18:03:09Z2012-021874-088Xhttp://red.uao.edu.co//handle/10614/12165Universidad Autónoma de OccidenteRepositorio Educativo DigitalCorrosive-erosive effect on AISI D3 steel, 304 stainless steel and CrN/AlN coating in aqueous NaCl slurries was studied. CrN/AlN multilayer films with a thickness of 3 µm and bilayer period of Λ = 60 nm (50 bilayers) were obtained by using the physical vapor deposition (PVD) technique (magnetron sputtering). The corrosion-erosion experiments were performed in a test machine in which the impingement velocity, impact angle, concentration of solids and pH of the solution were controlled. Polarization curves were simultaneously obtained to correlate the electrochemical effects to the erosive wear mechanisms. The slurry used consists of silica particles suspended in a mixture of acid solution and 3.5% NaCl, with a pH value of 5.6. Electrochemical results showed the best corrosion resistance for 304 stainless steels. Additionally, the surface analysis by SEM micrograph revealed formation of cracks in CrN/AlN multilayers coating and plastic deformation in both steel substrates (AISI D3 steel, 304 stainless steel), especially when the mean impact angle is a critical value of 90°. Measurements of critical and passive current densities showed that the behavior of coated materials differed depending on the substrate that is used. Nonetheless, in a general way, by increasing the impact angle and by changing its incidence from normal to grazing, it led to a resistance to corrosion-erosion processesapplication/pdf8 páginasengBentham ScienceThe Open Materials Science Journal. Volumen 6, (2012): páginas 14-2121146Caicedo Angulo, J. C., Cabrera Cifuentes, G., Caicedo, H. H., Aperador, W. A. (2012). comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless steel and CrN/AlN material. The Open Materials Science Journal. 6 (1), 14-21. http://red.uao.edu.co//handle/10614/12165The Open Materials Science JournalAnnual Book of ASTM Standards 2002. Section 03, 03-02, G119-93, 2002Lopez D, Congote JP, Cano JR, Toro A, Tschiptschin AP. Effect of particle velocity and impact angle on the corrosion-erosion of AISI 304 and AISI 420 stainless steels. Wear 2005; 259: 118-24.Burstein GT, Sasaki K. Effect of impact angle on the slurry erosion-corrosion of 304L stainless steel. Wear 2000; 240: 80-94.Aiming F, Jinming L, Ziyun T. An investigation of the corrosive wear of stainless steels in aqueous slurries. Wear 1996; 193: 73-7.Toro A, Sinatora A, Tanaka DK, Tschiptschin AP. Corrosion-erosion of nitrogen bearing martensitic stainless steels in seawater-quartz slurry. Wear 2001; 251: 1257-64Neville A, Hodgkiess T, Dallas JT. A study of the erosion-corrosion behavior of engineering steel for marine pumping applications. Wear 1995; 187: 497-507Cabrera G, Torres F, Caicedo JC, Aperador W, Amaya C, Prieto P. Improvement of Electrochemical Surface Properties in Steel Substrates Using a Nanostructured CrN/AlN Multilayer Coating. JMEPEG ASM International. DOI: 10.1007/s11665-010-9798-7Caicedo JC, Yate L, Cabrera G, Aperador W, Zambrano G, Prieto P. Effect of negative bias voltage on mechanical and electrochemical nature in Ti-W-N coatings. J Mater Sci 2011; 46: 1244-52.Purandare YP, Stack MM, Hovsepian PEh. Velocity effects on erosion-corrosion of CrN/NbN “superlattice” PVD coatings. Surf Coat Technol 2006; 201: 361-70Suresha SJ, Math S, Jayaram V, Biswas SK. Toughening through multilayering in TiN-AlTiN films. Philos Mag 2007; 87: 2521-39.Han Z, Tian J, Lai Q, Yu X, Li G. Effect of N2 Partial Pressure on the Microstructure and Mechanical Properties of Magnetron Sputtered CrNx Films. Surf Coat Technol 2003; 162: 189-93Cabrera G, Caicedo JC, Amaya C, Yate L, Muñoz Saldaña J, Prieto P. Enhancement of mechanical and tribological properties in AISI D3 steel substrates by using a non-isostructural CrN/AlN multilayer coating. Mater Chem Phys 2011; 125: 576-86Fenker M, Balzer M, Jehn HA, Kappl H, Lee J-J, Lee K-H, Park H-S. Improvement of the corrosion resistance of hard wear resistant coatings by intermediate plasma etching or multilayered structure. Surf Coat Technol 2002; 150: 101-6Jehn HA. Structural defects and the electrochemical properties of nitride coatings. Surf Coat Technol 2000; 125: 212-7William Grips VK, Harish Barshilia C, Ezhil Selvi V , Kalavati, Rajam KS. Electrochemical behavior of single layer CrN, TiN, TiAlN coatings and nanolayered TiAlN/CrN multilayer coatings prepared by reactive direct current magnetron sputtering. Thin Solid Films 2006; 514: 204-11.Afrasiabi A, Saremi M, Kobayashi A. A comparative study on hot corrosion resistance of three types of thermal barrier coatings: YSZ, YSZ + Al2O3 and YSZ/Al2O3. Sci Eng A 2008; 478: 264-9Derechos Reservados - Universidad de Barcelona, 2012https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessAtribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)http://purl.org/coar/access_right/c_abf2A comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless steel and CrN/AlN materialArtículo de revistahttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1Textinfo:eu-repo/semantics/articlehttp://purl.org/redcol/resource_type/ARTREFinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/version/c_970fb48d4fbd8a85Materiales - Propiedades mecánicasMaterial - Mechanical propertiesCorrosion-erosionMultilayer coatingElectrochemical testsSurface analysisPublicationCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8805https://dspace7-uao.metacatalogo.com/bitstreams/725a9600-5563-4a49-95e4-38d0f4b39ec9/download4460e5956bc1d1639be9ae6146a50347MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81665https://dspace7-uao.metacatalogo.com/bitstreams/bd3d5bf4-484a-4a02-a1f0-b2e66b7dfee6/download20b5ba22b1117f71589c7318baa2c560MD53ORIGINALA comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless Steel and CrNAlN material.pdfA comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless Steel and CrNAlN material.pdfTexto archivo completo del artículo de revista, PDFapplication/pdf3327502https://dspace7-uao.metacatalogo.com/bitstreams/07d28ee5-0450-4f1a-9268-ec27c7081066/download5432fa32d5f5c9a86244da4368dd6b8bMD54TEXTA comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless Steel and CrNAlN material.pdf.txtA comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless Steel and CrNAlN material.pdf.txtExtracted texttext/plain37297https://dspace7-uao.metacatalogo.com/bitstreams/77d34dcc-d9da-4659-b986-7f06a7db949d/download61c4f63b26aaba3daf562402a605382eMD55THUMBNAILA comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless Steel and CrNAlN material.pdf.jpgA comparative study of corrosive-erosive effects at AISI D3 steel, 304 stainless Steel and CrNAlN material.pdf.jpgGenerated Thumbnailimage/jpeg16966https://dspace7-uao.metacatalogo.com/bitstreams/0a49e338-a15b-4f7a-8d00-c39b1632a882/download4e75faeb51ff6a69b6bfb83ce384dbd4MD5610614/12165oai:dspace7-uao.metacatalogo.com:10614/121652024-01-19 17:22:53.843https://creativecommons.org/licenses/by-nc-nd/4.0/Derechos Reservados - Universidad de Barcelona, 2012open.accesshttps://dspace7-uao.metacatalogo.comRepositorio UAOrepositorio@uao.edu.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 |